This paper investigates the problem of vibration in an axial flow waterjet propeller with high power density and low specific speed. Based on fluid–structure coupling analysis, combined modal analysis ship tests, unsteady a is examined, characteristics under different speed conditions are studied. The results show that vibrations mainly come from frequency response rotor structural resonance re...

A three-phase induction motor absorbs the most electric power among other electrical loads. Therefore, motors are primary used in industrial applications thanks to their simple construction and easy operation, as well low cost maintenance costs. Efficiency is a critical parameter that characterizes an traction motor. The defined engine's effectiveness converting at its input into mechanical ene...